2128538177 has 2 divisors, whose sum is σ = 2128538178. Its totient is φ = 2128538176.

The previous prime is 2128538147. The next prime is 2128538207. The reversal of 2128538177 is 7718358212.

It is a balanced prime because it is at equal distance from previous prime (2128538147) and next prime (2128538207).

It can be written as a sum of positive squares in only one way, i.e., 1405950016 + 722588161 = 37496^2 + 26881^2 .

It is a cyclic number.

It is not a de Polignac number, because 2128538177 - 2¹⁰ = 2128537153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2128538147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064269088 + 1064269089.

It is an arithmetic number, because the mean of its divisors is an integer number (1064269089).

Almost surely, 2^2128538177 is an apocalyptic number.

It is an amenable number.

2128538177 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128538177 is an equidigital number, since it uses as much as digits as its factorization.

2128538177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 44.

The square root of 2128538177 is about 46136.0832429455. The cubic root of 2128538177 is about 1286.3539408021.

The spelling of 2128538177 in words is "two billion, one hundred twenty-eight million, five hundred thirty-eight thousand, one hundred seventy-seven".